Zoomed copy metafile to clipboard with annot groups

[User (Legacy)]

I created a chart with annotation lines, arrows, and text grouped into

annotation groups. There seem to be two problems.

FIrst, when I zoom into a portion of the chart, the annotations extend

beyond the chart borders (axis limits) on screen. Copying to the clipboard

(using the toolbar) as a bitmap also shows the objects outside the chart

borders

Second, copying to the clipboard as an enhanced metafile includes the

grouped annotation objects that lie outside the zoom plot area. Their full

extent is included in the bounding area of the metafile, and I end up with

objects off to the sides or top way outside the chart itself.

Code to see these effects is listed below.

It looks to me as if the annotation groups are being included in their

entirety in the copy to clipboard operation, instead of being clipped at the

chart zoom boundaries.

If I don't group the annotation objects, the first effect still occurs: they

overlap the axes' bounds upon zooming in. However, those that lie entirely

outside the axes' bounds are not copied into the metafile any longer.

Thanks for any feedback on how to get metafiles that reflect only what

appears on the chart.

-- John

\=============================\

Imports softwareFX.ChartFX

Imports SoftwareFX.ChartFX.Annotation

Imports SoftwareFX.ChartFX.Data

Public Class Form1

    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

   ...

#End Region

    Private Sub Form1_Load(ByVal sender As Object, ByVal e As

System.EventArgs) Handles MyBase.Load

        'make a line

        Dim xvalues() As Double = {0, 1, 2, 3, 4, 5, 6}

        Dim yvalues() As Double = {0, 2, 4, 6, 8, 10, 12}

        Dim allvalues(1) As Object

        allvalues(0) = xvalues

        allvalues(1) = yvalues

        Chart1.Gallery = Gallery.Lines

        Chart1.DataSourceSettings.DataType(0) = DataType.XValue

        Chart1.DataSourceSettings.DataType(1) = DataType.Value

        Dim lstProvider As New ListProvider(allvalues)

        Chart1.DataSourceSettings.DataSource = lstProvider

        Dim group As New AnnotationGroup

        Dim annotx As New SoftwareFX.ChartFX.Annotation.AnnotationX

        Chart1.Extensions.Add(annotx)

        annotx.List.Add(group)

        Dim circle As New AnnotationCircle

        circle.Color = Color.Blue

        circle.Height = 30

        circle.Width = 30

        circle.Attach(5, 3)

        group.List.Add(circle)

        circle.Refresh()

        Dim balloon As New AnnotationBalloon

        balloon.Text = "a balloon"

        balloon.TailCorner = 1

        balloon.ArrowFactor = 10

        balloon.Border.Color = System.Drawing.Color.Black

        balloon.Color = System.Drawing.Color.Gold

        balloon.SizeToFit()

        balloon.Attach(2, 3)

        group.List.Add(balloon)

        balloon.Refresh()

        Dim text As New AnnotationText

        text.Text = "Some text"

        text.TextColor = System.Drawing.Color.Blue

        text.Color = System.Drawing.Color.Transparent

        text.Border.Color = System.Drawing.Color.Transparent

        text.SizeToFit()

        text.Attach(2, 5)

        group.List.Add(text)

        text.Refresh()

        Dim arrow As New AnnotationArrow

        arrow.Color = System.Drawing.Color.Salmon

        arrow.Height = 30

        arrow.Width = 30

        arrow.Attach(4, 8)

        arrow.Border.Color = System.Drawing.Color.Red

        group.List.Add(arrow)

        group.RecalcBounds()

        Chart1.Refresh()

    End Sub

End Class

[Software FX]

1) in Chart FX 6.2 the Annotation object have a property called DrawingArea.

When set to true, they will be clipped to the chart's drawing area (between

the axes)

2) If the objects are properly attached, they will be moved/resized

accordingly when you zoom-in or out. When this is combined with the

DrawingArea property, they will also be restricted to the chart's drawing

area.

-- 

FP

Software FX, Inc.

[User (Legacy)]

Yes, the DrawingArea property has the desired effect on individual objects.

However, when the drawing objects are added to a annotationx group.list,

their individual DrawingArea vales are ignored, so that the original problem

with the metafile occurs.

Also, if I set the group.DrawingArea property to True, the entire group is

neither displayed nor copied to the metafile at all, regardless of the zoom

setting. The objects in the group all lie well within the chart boundaries.

Checking the boundaries of the group that results from the code in the

previous method, the group.left property is -37: does this then cause the

group not to display?

I'm using annotation groups to allow the user to show/hide the annotations

by category as the chart is too complex with all the annotations displayed.

I'm going to code the effect I want instead of using the built-in groups,

unless there's a simple answer to this one.

-- John

"SoftwareFX Support" <support@softwarefx.com> wrote in message

news:JVaX$Hf4DHA.2336@webserver3.softwarefx.com...

> 1) in Chart FX 6.2 the Annotation object have a property called

DrawingArea.

> When set to true, they will be clipped to the chart's drawing area

(between

> the axes)

>

> 2) If the objects are properly attached, they will be moved/resized

> accordingly when you zoom-in or out. When this is combined with the

> DrawingArea property, they will also be restricted to the chart's drawing

> area.

>

> -- 

> FP

> Software FX, Inc.

>

>

[Software FX]

Did you try setting DrawingArea to true to the Group object itself ?

-- 

FP

Software FX, Inc.

[User (Legacy)]

Yes, that's what I did. If group.DrawingArea == True then nothing in the

group is displayed or copied to the metafile. If group.DrawingArea == False

then the group is displayed and the objects in group.list behave as if each

obj.DrawingArea = False. This is with the objects in the supplied code.

-- John

"SoftwareFX Support" <support@softwarefx.com> wrote in message

news:baLafFE5DHA.2468@webserver3.softwarefx.com...

> Did you try setting DrawingArea to true to the Group object itself ?

>

> -- 

> FP

> Software FX, Inc.

>

>

[Software FX]

Ok.

The problem here seems to be the following:

A group with attached objects inside is not able to correctly calculate its

bounds.

I will check to see whether or not this can be changed. I suggest the

following workaround:

1) Call RecalcBounds after the objects have been drawn. This way, the

logical position have already been translated to physical positions.

2) Do not use groups to group attached objects.

-- 

FP

Software FX

[User (Legacy)]

Thanks for the suggestions. I added several annotx lists to the chart

extensions, and used the individual annotx lists to hold the individual

graphic items. Then, I traverse each list as required and enable or disable

each item's visibility.

The group route would be easier, but this is working fine now.

-- John

"SoftwareFX Support" <noreply@softwarefx.com> wrote in message

news:WU4SAb25DHA.2468@webserver3.softwarefx.com...

> Ok.

>

> The problem here seems to be the following:

>

> A group with attached objects inside is not able to correctly calculate

its

> bounds.

>

> I will check to see whether or not this can be changed. I suggest the

> following workaround:

>

> 1) Call RecalcBounds after the objects have been drawn. This way, the

> logical position have already been translated to physical positions.

>

> 2) Do not use groups to group attached objects.

>

> -- 

> FP

> Software FX

>

>